$76+ Cheap flights from Ontario to Knoxville (ONT - TYS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — TYS
Jun 4 — Jun 111
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Knoxville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Knoxville
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Best
Last-minute
One-way
Cheapest flights from Ontario to KnoxvilleExplore the most affordable flight options available from Ontario to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 5, 2026.
Explore the most affordable flight options available from Ontario to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 5, 2026.
This CheapOair deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Fri 6/58:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/2![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Mon 6/18:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/2![Frontier logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:34 pm
ONT
- TYS
1 stop27h 07m
Multiple Airlines
Mon 8/2412:49 pm
TYS
- ONT
1 stop9h 59m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$274
This CheapOair deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:00 am
ONT
- TYS
1 stop10h 36m
Frontier
Fri 7/318:32 pm
TYS
- ONT
1 stop16h 31m
Frontier
Deal found 5/4![Frontier logo]()
$280
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:00 am
ONT
- TYS
1 stop8h 17m
Delta
Wed 9/164:00 pm
TYS
- ONT
1 stop8h 56m
Delta
Deal found 4/30![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/142:15 pm
ONT
- TYS
1 stop6h 37m
American Airlines
Tue 7/218:11 pm
TYS
- ONT
1 stop6h 48m
American Airlines
Deal found 5/4![American Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:59 pm
ONT
- TYS
2 stops10h 32m
American Airlines
Tue 9/17:19 am
TYS
- ONT
1 stop7h 23m
American Airlines
Deal found 4/30![American Airlines logo]()
$364
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Fri 5/228:19 pm
TYS
- ONT
1 stop6h 30m
Frontier
Deal found 4/30![Frontier logo]()
$365
This American Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/302:18 pm
ONT
- TYS
1 stop6h 38m
American Airlines
Sat 6/65:33 pm
TYS
- ONT
1 stop9h 26m
American Airlines
Deal found 5/4![American Airlines logo]()
$366
Best flights from Ontario to KnoxvilleDiscover carefully curated flight deals from Ontario to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 5, 2026.
Discover carefully curated flight deals from Ontario to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 5, 2026.
This Delta deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:32 pm
ONT
- TYS
1 stop8h 20m
Delta
Mon 8/246:12 pm
TYS
- ONT
1 stop6h 40m
Delta
Deal found 5/3![Delta logo]()
$408
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:18 pm
ONT
- TYS
1 stop6h 20m
United Airlines
Sat 9/54:56 pm
TYS
- ONT
1 stop6h 56m
United Airlines
Deal found 5/2![United Airlines logo]()
$459
This Southwest deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:30 am
ONT
- TYS
2 stops8h 50m
Southwest
Thu 7/164:20 pm
TYS
- ONT
2 stops10h 10m
Southwest
Deal found 5/4![Southwest logo]()
$545
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/225:00 am
ONT
- TYS
2 stops12h 48m
United Airlines
Sat 8/293:25 pm
TYS
- ONT
1 stop9h 34m
United Airlines
Deal found 4/30![United Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2012:07 pm
ONT
- TYS
1 stop8h 49m
Delta
Thu 5/215:40 am
TYS
- ONT
1 stop8h 17m
Delta
Deal found 4/30![Delta logo]()
$519
This Southwest deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:15 am
ONT
- TYS
2 stops10h 05m
Southwest
Tue 7/72:45 pm
TYS
- ONT
2 stops8h 15m
Southwest
Deal found 5/2![Southwest logo]()
$605
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:07 pm
ONT
- TYS
1 stop8h 49m
Delta
Sun 5/243:30 pm
TYS
- ONT
1 stop9h 18m
Delta
Deal found 4/30![Delta logo]()
$577
Last-minute flights from Ontario to KnoxvilleDiscover last-minute flight deals from Ontario to Knoxville. Data last updated May 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Knoxville. Data last updated May 5, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Fri 5/228:19 pm
TYS
- ONT
1 stop6h 30m
Frontier
Deal found 4/30![Frontier logo]()
$365
This CheapOair deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Mon 6/18:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/2![Frontier logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
ONT
- TYS
1 stop10h 24m
Multiple Airlines
Mon 6/17:24 pm
TYS
- ONT
2 stops39h 11m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$390
This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/302:18 pm
ONT
- TYS
1 stop6h 38m
American Airlines
Sat 6/66:07 pm
TYS
- ONT
1 stop7h 29m
American Airlines
Deal found 4/30![American Airlines logo]()
$359
This CheapOair deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Fri 6/58:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/2![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/103:34 pm
ONT
- TYS
2 stops41h 25m
Multiple Airlines
Wed 6/178:32 pm
TYS
- ONT
1 stop16h 33m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/123:34 pm
ONT
- TYS
2 stops27h 19m
Multiple Airlines
Mon 6/158:32 pm
TYS
- ONT
1 stop16h 33m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2110:50 am
ONT
- TYS
1 stop29h 47m
Multiple Airlines
Mon 6/296:30 am
TYS
- ONT
2 stops30h 35m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/2510:00 pm
ONT
- TYS
1 stop8h 38m
Delta
Wed 7/15:40 am
TYS
- ONT
1 stop8h 00m
Delta
Deal found 5/3![Delta logo]()
$428
This Delta deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:00 pm
ONT
- TYS
1 stop8h 38m
Delta
Wed 7/86:05 pm
TYS
- ONT
1 stop6h 45m
Delta
Deal found 5/4![Delta logo]()
$408
One-way flights from Ontario to KnoxvilleSearch for one-way flight options from Ontario to Knoxville. Find affordable one-way fares based on user searches. Data last updated May 5, 2026.
Search for one-way flight options from Ontario to Knoxville. Find affordable one-way fares based on user searches. Data last updated May 5, 2026.
This Trip.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/3![Frontier logo]()
$76
This Trip.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/2![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/226:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/1![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 5/4![Frontier logo]()
$141
This Frontier deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 5/3![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Deal found 4/30![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/303:34 pm
ONT
- TYS
2 stops25h 03m
Frontier
Deal found 5/4![Frontier logo]()
$173
This Priceline deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/4![Frontier logo]()
$175
This KAYAK deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/196:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/1![Frontier logo]()
$176
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/610:00 pm
ONT
- TYS
1 stop8h 38m
Delta
Deal found 4/30![Delta logo]()
$180
This Frontier deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/4![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/25:43 pm
ONT
- TYS
1 stop26h 05m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$222
Find flight deals from Ontario to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Knoxville (TYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $241 (CheapOair) |
One-way from | $76 (Trip.com) |
Popular in | March |
Cheapest in | September |
Average price | $467 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Knoxville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 5, 2026.
Use the filters below to find and compare flights from Ontario to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Wed 8/19
12:32 pm-11:52 pm
1 stop8h 20m
Knoxville McGhee Tyson
Mon 8/24
6:12 pm-9:52 pm
1 stop6h 40m
$408
Quickest round-trip
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Tue 9/1
1:18 pm-10:38 pm
1 stop6h 20m
Knoxville McGhee Tyson
Sat 9/5
4:56 pm-8:52 pm
1 stop6h 56m
$459
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Sat 8/22
5:00 am-8:48 pm
2 stops12h 48m
Knoxville McGhee Tyson
Sat 8/29
3:25 pm-9:59 pm
1 stop9h 34m
$464
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Wed 5/20
12:07 pm-11:56 pm
1 stop8h 49m
Knoxville McGhee Tyson
Thu 5/21
5:40 am-10:57 am
1 stop8h 17m
$519
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Wed 7/8
8:30 am-8:20 pm
2 stops8h 50m
Knoxville McGhee Tyson
Thu 7/16
4:20 pm-11:30 pm
2 stops10h 10m
$545
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Sun 5/17
12:07 pm-11:56 pm
1 stop8h 49m
Knoxville McGhee Tyson
Sun 5/24
3:30 pm-9:48 pm
1 stop9h 18m
$577
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Tue 6/30
5:15 am-6:20 pm
2 stops10h 05m
Knoxville McGhee Tyson
Tue 7/7
2:45 pm-8:00 pm
2 stops8h 15m
$605
Cheapest one-way
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Fri 5/22
6:00 am-7:24 pm
1 stop10h 24m
$131
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Fri 6/19
6:00 am-7:37 pm
1 stop10h 37m
$151
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Sat 6/6
10:00 pm-9:38 am
1 stop8h 38m
$180
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Ontario to Knoxville
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Knoxville in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Knoxville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Knoxville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Knoxville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Ontario with our price prediction graph.
ONT-TYS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Knoxville
How far ahead should I book a flight from Ontario to Knoxville?
To ensure you get the cheapest price possible for a flight from Ontario to Knoxville, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Ontario to Knoxville?
Currently, September is the cheapest month in which you can book a flight from Ontario to Knoxville (average of $348). Flying from Ontario to Knoxville in March is currently the most expensive (average of $564). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Ontario to Knoxville?
Reviews of airlines servicing Knoxville
Get insights into the airlines that provide service to Knoxville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Knoxville. Reviews last updated May 5, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Ontario to Knoxville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Knoxville?
Book flights to Knoxville if you plan to visit one of these locationsCherokee
Crossville
Morristown
Bryson City
Murphy
Alcoa
Oak Ridge
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Top 3 airlines flying from Ontario to Knoxville
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$460 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$418 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$318 | Average$506 | FlexibilityNo cancel fee | On-time69% |